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.\" This file and its contents are supplied under the terms of the
.\" Common Development and Distribution License ("CDDL"), version 1.0.
.\" You may only use this file in accordance with the terms of version
.\" 1.0 of the CDDL.
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.\" Copyright 2015 Joyent, Inc.
.\"
.Dd May 11, 2016
.Dt PGETENV 3PROC
.Os
.Sh NAME
.Nm Pgetenv
.Nd get process environment variable
.Sh LIBRARY
.Lb libproc
.Sh SYNOPSIS
.In libproc.h
.Ft "char *"
.Fo Pgetenv
.Fa "struct ps_prochandle *P"
.Fa "const char *name"
.Fa "char *buf"
.Fa "size_t buflen"
.Fc
.Sh DESCRIPTION
The
.Fa Pgetenv
function searches the environment of the process handle
.Fa P
for the environment variable named
.Fa name .
If found it copies up to
.Fa buflen
characters of the value, including the null terminator, into the buffer
.Fa buf .
Everything after the
.Sy =
sign is copied.
.Sh RETURN VALUES
Upon successful completion, the
.Fn Pgetenv
function returns the pointer
.Fa buf .
Otherwise, if the environment variable was not found,
.Dv NULL
is returned.
.Sh INTERFACE STABILITY
.Sy Uncommitted
.Sh MT-LEVEL
See
.Sy LOCKING
in
.Xr libproc 3LIB .
.Sh SEE ALSO
.Xr libproc 3LIB ,
.Xr Penv_iter 3PROC ,
.Xr environ 7
